diff options
| -rw-r--r-- | llvm/lib/CodeGen/MachineInstr.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp index 3f4a92804c4..12b974d30be 100644 --- a/llvm/lib/CodeGen/MachineInstr.cpp +++ b/llvm/lib/CodeGen/MachineInstr.cpp @@ -1064,8 +1064,8 @@ bool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const { unsigned MachineInstr::isConstantValuePHI() const { if (getOpcode() != TargetInstrInfo::PHI) return 0; - if (getNumOperands() <= 1) - return 0; + assert(getNumOperands() >= 3 && + "It's illegal to have a PHI without source operands"); unsigned Reg = getOperand(1).getReg(); for (unsigned i = 3, e = getNumOperands(); i < e; i += 2) |
